Home / 131,479.20-181,443.24-74,889.36

Finding the Fourth Proportional to 131,479.20, 181,443.24 and 74,889.36

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Solution

The fourth proportional to 131,479.20, 181,443.24 and 74,889.36 is: 103,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,479.20 : 181,443.24 = 74,889.36 : x
  2. Step 2: Convert to fraction form
    131,479.20/181,443.24 = 74,889.36/x
  3. Step 3: Cross multiply
    131,479.20x = 181,443.24 × 74,889.36
  4. Step 4: Simplify right side
    131,479.20x = 13,588,168,119.93
  5. Step 5: Solve for x
    x = 13,588,168,119.93/131,479.20
  6. Step 6: Final answer
    x = 103,348.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.